Reduced risk of dementia in patients with type 2 diabetes mellitus using Chinese herbal medicine: A nested case-control study

Table 3 Risk of dementia among type 2 diabetes mellitus patients with and without exposure to Chinese herbal medicine use stratified by sex and age

Variables	Patients, n (%)	Crude OR (95%CI)	Adjusted OR (95%CI)
Female
Non-CHM users	4140 (73.6)	1	1
CHM users	1482 (26.4)	0.51 (0.47-0.55)	0.49 (0.45-0.53)1
Male
Non-CHM users	4913 (80.8)	1	1
CHM users	1164 (19.2)	0.54 (0.50-0.59)	0.53 (0.48-0.57)1
Aged 20-40 yr
Non-CHM users	1011 (77.6)	1	1
CHM users	291 (22.4)	0.46 (0.39-0.55)	0.45 (0.37-0.54)2
Aged 41-60 yr
Non-CHM users	6487 (77.2)	1	1
CHM users	1921 (22.8)	0.53 (0.49-0.57)	0.51 (0.48-0.55)2
Aged 61-70 yr
Non-CHM users	1555 (78.2)	1	1
CHM users	434 (21.8)	0.54 (0.47-0.61)	0.53 (0.46-0.60)2

¹Adjusted for the age, residential area, monthly income and Charlson-Deyo comorbidity index.

²Adjusted for the sex, residential area, monthly income and Charlson-Deyo comorbidity index.

CHM: Chinese herbal medicine; OR: Odds ratio; CI: Confidence interval.